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UNITED STATES PATENT OFFICE.

CHARLES H. WARREN. OF ATLANTA. GEORGIA. ASSIGNOR TO DRAPER CORPORATION, OF HOPEDALE. MASSACHUSETTS. A 0032333; TION OF MAINE.

LOOM FEELEB MECHA; LS'

To all "tlhOHl it may concern Be it known that l, (hmnnns H. \VARIHLX. of Atlanta. in the count of Fulton and State of Georgia. have invented an linproved Loom Fccler Mechanism. of which the following is a specification.

The present invention consists of certain improvements upon the impact type ot' side slipping loom fceler mechanism such as is set, forth in Letters Patent oi" the United July 8, Stinipson. 18, 1918.

In accordance with said patent and application, the impact of the forwardly moving bobbin, or other weft carrier. tends to displace the 't'eeler laterally and lengtln wise of the weft carrier but this movement is restrained by the contact between the weft and the teelcr tip. \Vhen, however. the hole bin, or other wet't carrier, is bared where it contacts with the feeler tip, the trailer tip slides along the smooth surface, of the weft carrier and this movement is utilized in srtting into action a train of mechanism which replenishes the wett. It occasionally happens in looms equipped with such 'leelcr mechanism that the shuttle is misplaced when in the shuttle box at the detecting side of the loom so that the weft does not contact with the feeler tip but said tip is cncountered by a smooth portion of the bobbin or shutte such as the front weft carrier holding pring such as is employedin th well known Northrop loom. The eii'eet of such encounter is the same that of the smooth bared weft carrier. nan'iely to cause the fceler to slip sidewise and hence to bring about premature wet't replenislmnu t. This may occur when the weft carrier has a full load oi weft or a supply of weft ample for further weaving so that. labor is lost in replacing such prematurely discharged wci't carriers in the weft replenishing magazine. The first object of the present invention is to prevent such premature calls for weft replenishment and one of the present im- 1919. and in an application of said Serial Number 245.565, filed Jul) provements consists in the construction and organization which achieve this object.

A second improvement resides in the particular construction of the teeth of the feeier tip which is especially effective when weavingwith coarse wefts.

Specification of Letters Ea nt.

Patented Mar. 2, 1920.

The iin 'iroveinents are illustrated in the accompanying drawings in whichl*'igure l. is a plan .view of so much of the detecting side of the loom as is necessary for an understanding of the improvement. In this figure the front walls of the shuttle and ot' the shuttle box are shown in section, and the parts are shown in the position which the occupy just as the weft first encounters the teeler tip du ring the forward swing of the lay on its detecting beat. Figs. 2, and 3. are views of the teeler tip and of a portion of the weft and of the bobbin on an enlarged scale illustrating their relation at different stages of the operation of the loom. Fig. 2, shows the initial contact between the Weft and 'fceler tip. Fig. 3. 'llustrates approximately the condition which occurs following the encounter of weft and feeler tip, incliating a penetration of the teeth into the weft. Fig. 4, is 'a View similar to Fig. 1., showing' an encounter between the front bobbin holding spring and the feeler tip. Fig. 5. is a view illustrating the lateral slip of the feeler along a bared bobbin, a part of the teeter mechanism being shown in horizontal section. Fig. 6, is a detailed vertical section in the plane indicated in the line e-o in. Fig. 2. Figs. 1, and 5', show the shuttle in normal position, and Fig. 4, shows it misplaced.

The improvements constituting the present invention reside in the construction of the teeler tip 1A! and its teeth and in the relation between such feeler tip and the la and shuttle, the shuttle being provided wit a specially elongated front opening to cooperate with the new feeler tip. the drawings illustrate the feeler mechanism of the aforesaid patent andapplication.

The feeler comprises the feelcr tip A, and a feeler arm B. The feeler arm is mounte so as to both slide and swing and it is shown asinclincd o the fore and aft swing of the lay and with the feeler tip offset laterally as compared with the forward end of the feeler arm. As a consequence of this disposition of the feelcr arm the impact of the forwardly moving bobbin C, tends to swing the feeler arm laterally and lengthwise of the bobbin. So lon however, as weft D, is present on the b0 bin opposite the feeler tip the engagement of the weft with the feeler tip teeth E, prevents such lengthwise Otherwise,

slip ing. Fig. 3, illustrates to an exaggerate degree. for the sake of clearness, genetration of the teeth E, into the weft to prevent the sli ping of the tip lengthwise of the bobbin Whern. however, the feeler tip teeth encounter the smooth surface of the bar-ed bobbin, the impact of the bobbin on the inclined feeler causes the feeler to swing and the teeth E, to slip along the bbbbin to the position shown in Fi 5. This lateral swing is utilized tov set 0 weft replenishing train into action. The feeler tip A, is secured in the forked rear end of the feelcr arm by a screw F.

The accompanying drawings illustrate only enough of the feeler sup rtin and cooperating mechanism to enab e the s iding and swinging movements of the fceler arm to be understood, since in these res the mechanism is identical with that s own in the aforesaid patent. The feeler arm B, is

mounted on a bracket I, attached to a lateral extension J, of the breast beam. A front uide K, is swiveled to the forward end 0 the bracket, turning on a vertical axis. This front guide has a through-apertore through which the front on feeler arm extends and slides. At its rear end the feeler arm extends three a broad guideway in the bracket, thesi c margins of this passageway being indicated at L, L. The top of this guideway is closed 1) a cap M, which with the bottom of the racket confines the feeler arm a inst vertical movement. Secured to the celer arm near its middle is a slide N, which slides on horizontal ways 0, of the bracket. A spring Q, surrounds the feeler arm between the slide N, and the swiveled guide K, and normally holds the feeler arm in its rearward position with the slide against the shoulders of the bracket which support the cap M, as shown in Fig. 1. The fceler -atm is also wall L, of the rear guideway. The swiveled guide is offset laterally and outwardly with respect to the rear guideway so that the feeler arm stands at anjmgle to the fore. and aft swing of the lay and the bobbin (or the weft thereon) encounters the tip A, along a fore and aft path nearer the tip of the bobbin than a parallel path intersectin the swiveledguide. So long as the we on the bobbin encounters the teeth of the tip the resistance thins offered prevents any slip ping of the tip lengthwise of the bobbin. Accordingly as the lay moves forward after the first encounter of the weft with the tip there is no sliding of the tip slot: the waitbut, during the completion oftfe forward movement of the bobbin, the dealer arm is moved forwardly compressin the spri Q. Durin this normal action t era is a :li t inwa swing (to the right) of the fee or of the leave an openin Pr ud arm permitted by the turning of the swiveled guide. \Vhcn the bobbin is bfirc opposite the fecler tip them is a further inward lateral swing of the feeler arm to the right, as shown in Fig. 5, and this additional swing is utilized to set in action the train of weft replenishing mechanism.

This functional swing of the feeler arm under the impact of the bare bobbin causes the fceler arm to encounter a controller X, and move it laterally inward. This controller is mounted in a transverse guide-way Y, of the bracket J, and it has a slot Z, through which the feeler arm passes. This slot, is sulliciently wider than the feeler arm 50 that the normal swing of the feeler arm has no ell'ect on the controller. When, however, the functional swing of thc feeler arm is imparted to it by the ion hwise move ment of the feeler tip along t e bobbin the controller is slid laterally inward. This lateral movement of the controller is utilized to bring about weft replenishment as exlained in detail in the aforesaid patent.

M the functional action has occurred a fixed cam W, on the bracket acts upon a downwardly extending projection V, (indigatcd in dotted lines only Fig. '4) on the color arm to restore the ieeler arm to its normal position as it retreats under the influenc: of the spring Q, as set forth in said The wen D, is so wound on the bobbin (or other weft-carrier) that there is a suflicient amount (as indicated in Fig. 5) to continue the weaving after thecfecler ti has performed its functional slip and until weft re lenishment has been effected. 7

As s own in Figs. 1, and 4, the head jof the bobbin 0, is he d by jaws 10,-carried by the shuttle 11, as 19 customary in the well known Northrop loom, as illustrated, for exam le, in United States Letters Patw cut of E ward S. Stimpson, No. 1,074,908, maintained by the spring against the outer 12, for the rece tion of the fee er tip. The

trout wall of shuttle box at the detectng and of lay 13, has two sections 14, and 15, separated from each other so as to for the race ion of the Eac of these wa sections is with acovering 16, of leather or equivalent material, In all of these respects the organization similar to that previously used in the Northrop loom excepting that shuttle slot or window 12, is elongated inwardly toward the bobbin tip to a greater than usual to accommodate be special construct on of the feeler tip.

Theieeler tip A, is formed with an elongated toe'll, ro acting laterally beyond the ,rearendot t e eelcr arm B, and terminat- 11] an inclined stop end 18. When the fee or tip slips sidewise along the barcd bobfeeler ti bin, as shown in Fig. 5, thereby moving the controller X, laterally inward to initiate the action of the weft replenishing mechanism, the elongated toe 17. of the feeler tip slips to a position behind the outer end of tie shuttle box fr'ontsection 15, as shown in Fig. 5. This movement is permitted by the elongated inner end 19. of the shuttle slot: 1:2. The fore and aft width of the toe 17, is less than the distance between the shank of the bobbin and the front wall of the shutv tle box so that ample space is afl'orded for the entrance of the toe shown in Fig. 5, but. such width is greater than the thickness of the front wall of the shuttle.

In the event, however that. the shuttle is misplaced in the shuttle box at the detecting side of the lay so that the teeler tip encounters the front bobbin spring 10. instead of the weft. as indicated in Fig. 4. the'stop end 19. of the fecler tip abuts against the. outer end of the wall section 15. before the fceler has slipped sidewise far enough to have any effect upon the controller. as illustrat'cd in Fig. 4. The slot Z. in the conll'ollcr X. is wide enough to permit some lateral movement of the fcclcr tip without any movement bcing imparted to the controller. The organization is such that the fcelcr tip encounters the shuttle box wall section 17. and is stopped thereby before the fceler arm moves sidewise far enough to transmit latcral movement to the controller.

As compared with the construction shown in the aforesaid application of Stimpson. the slot Z. in the controller issomewhat clongated and sutliciently so to permit the tech-r tip to be stopped by the shuttle box wall section 15. just as the feeler arm has trav erscd the slot Z. but has not yet movcd far enough to slide the controller. .u-cordingly. the weft replenishing train of mechanism is not set into action. and there is no ejection of the full or partially full bobbin as would be the caswif the feelcr tip were permitted to slip sidcwisc to its full extent when encountered l y the front bobbin spring 11). f the shuttle. in setting the t'ecler mechanism on the loom. the distance bctwccn the stop cud l8. and the cooperating covered wall section l5. 16. should be no reater than the length of the part of the slot Z, which is unoccupied by the arm B. as shown in Fig. 1.

The shuttle tip X. is rigidly and immovably held within the rear end of fecler arm It. aml the ends of the teeth E, are arranged in an arc of a horizontally extendin r circle convex toward the bobbin as in the at iiresaid Stimpson application 245.5135 excepting that the arc is of smaller radius. In said application the rear end of each tooth is rounded along a horizontal plane but is straight vertically. In accordance with the. present invention the end of each tooth as shown in horizontallv in a straight line.

3 is blunt horizontally. That is down upon the teeth as in ie end of each tooth extends Any horizontal section of a tooth shows its end as a straight line. Hence eacn tooth is straight and blunt horizontally; that tooth which penetrates the weft most deeply being parallel horizontally with the longitudinally extending portion of the bobbin as shown in Fig. 3. But, vertically, each tooth is pointed. as shown in Fig. 6. this pointing ieing obtained by roundmg the end of the tooth in a vertical direction. Hence, as shown in Fig. 6-. any yertical section of the. tooth. shows its end as a round'point. 'lherefore, as shown in Fig. 6. a vertical section through the bobbin and the feeler tip exhibits the contiguous surfaces as convex toward each other. in other words, the end of each tooth is cylindrical with the. axis of the cylinder extending horizontally. ()wing to this construction each tooth is blunt and straight horizontally. and is pointed \erticaltv. The end of each tooth meets each of its side wallsby a sharp corner it). This shape of tooth is particularly eflicacious when coarse wefts are used. The rounding of the teeth vertically permits suiticient )enetration into the' weft and the sharp inner corners prevent permature slippage. The arrangement of the teeth in a horizontally extending circular arc of small radius convex to the bobbin brings the sharp inner corners .20. into effective action.

l. loom feclcr mechanism having a side slipping fceler with a toothed tip having a laterally projectingtoe with its fore and aft width less than the distance between the 105 bared surface of the weft carrier and the front wall of the shuttle box at the detecting side of the loom and greater than the thickness of the front wall of the shuttle, said tip terminating in a stop end, in com- 110 bination with the lay having an opening in the shuttle box at the detecting end of the lay for the reception of the fceler tip, and a shuttle having an elongated opening in its front wall for the reception of the feelertip, 115 said elongated opening extending inwardly beyond the opening in the shuttle box in the feeler tip slips.

Figs. 2 and to say, lookin these figures. t

the direction in which A loom feeler mechanism having a side slipping .feeler with a tip having a laterally projecting toe with its fore and aft width less than the distance between the bared surface of the weft carrier and the, o front wall of the shuttle box at the detecting side of the loom, said tip terminating in a stop end. in combination with the lay having at its detecting end an opening in the shuttle box for the reception of the feeler tip, and a shuttle having an elongated 0 ening in its front wall for the reception 0 the ringed lh a honieontal feeler tip, said elongated opening extending beyond the openln in the shuttle box in the direction in whic the feeler tip slips.

3. A 100m feeler mechanism having a slde slipping feeler with a lnrality of teeth arranged in a horizonta 1y extending are of a circle convex toward the bobbin, each tootn at its real feeling end being straight and blunt in horizontal planes and curved in vertical planes with sharp corners between of thetooth and its rear feeling A loom feeler meehenisin having a side slipping feeler with a plurality of teeth ary extending are of a circle convex toward the bobbin. each tooth at its rear feelin end being blunt in horizontal planes and pointed in vertical planes with a sharp corner between the inner side of the tooth and its rear feeling end.

5. A loom feelel' mechanism having a side slipping feeler with a plurality of teeth urrangetl at varying distances from the bobbin, each tooth at its rear feeling end being blunt in horizontal planes and pointed in vertical planes.

In witness whereof, I. have hereunto signed my name.

CHARLES Irwin-:1: r: 

